A bolted joint is to have a grip consisting of two 14-mm steel plates and one 14R metric plain washer to fit under the head of the M14 x 2 hex-head bolt, 50 mm long. (Hint: Look up table A-31 and A-33 in the textbook of Shigley's Mechanical Engineering Design, 8th Edition) (a) What is the length of the thread LT for this diameter metric coarse-pitch series bolt? (b) What is the length of the grip I? (c) What is the height H of the nut? (d) Is the bolt long enough? If not, round to the next larger preferred length. (e) What is the length of the shank and the threaded portions of the bolt within the grip?

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Metrology of Screw Threads

Screw threads are a series of ridges having the profile of a helix. This helix profile runs continuously along the length of a uniform solid or a hollow bar of a circular cross-section at periodic intervals. These helix ridges are also formed over a conical bar. These continuous helical ridges are termed threads.